DETROIT — Automakers are going to have to work a little harder for your business in 2014.

After four years of strong sales increases — and few discounts — as the economy improved, U.S. demand for new cars and trucks is expected to slow this year. That could mean better deals for buyers as car companies fight to increase their share of the market.

The industry got a taste of what’s to come in December, when General Motors, Toyota and Volkswagen all saw their sales fall from a year ago.

This year’s slowdown is inevitable, analysts say. Many people who held on to their cars through the recession have now bought new ones. Those who haven’t may not be in any rush, because cars are lasting longer than ever before. And unless there’s a strong uptick in the economy, families aren’t likely to buy a third car.

“Sales are approaching an equilibrium level of demand based on the needs of population and the number of licensed drivers in the country,” he said.

Ford led all major automakers in 2013 with an 11 percent gain to almost 2.5 million vehicles. Chrysler and Nissan posted 9 percent gains. GM, Toyota and Honda each posted 7 percent gains. GM sold 2.8 million cars and trucks in the U.S., compared with just over 2.2 million for Toyota. Hyundai’s sales rose 2.5 percent.

Casey Neistat admits that the logistics of running a business isn’t his speciality. Instead, he shared with Denver Startup Week audiences how he went from high school dropout to an HBO show, a New York Times partnership and later, an app that got started while on a fellowship at the Massachusetts Institute of Technology.

Twitter is defending its decision not to remove a controversial tweet by President Donald Trump on Saturday that targeted North Korea, in a six-tweet response to critics who argued that Trump violated the platform’s rules.